Be sure to give as much detail as possible to avoid delays with your order. We will work only on the piano track, the other tracks and the Karaoke file will not be modified, this means that if we will change the tempo you will lose the sync with the karaoke, in this case try using Karaoke Programs like Karaoke Builder or Karafun, they allows tempo and pitch variations in realtime. If you need we can send you the track in high quality format (CD quality). When you are finished, hit the add to cart button to add your custom track to your shopping cart. For other custom work, please contact us directly